Re: Re : Re : Re : [Xen-devel] Re: Patches for VGA-Passthrough XEN 4.2 unstable

[Weidong Han <hanweidong@xxxxxxxxxx>]

On 2011-9-7 20:51, David TECHER wrote:
> It is a great pleasure to know that is it working for you :)
>
> I've just updated the patchs sent by 'JavMV' on May 2011. Even if I'am
> not a Xen Developer
> it will be a great idea if a real Xen Developer takes care of the patchs
> to improve it for Xen 4.2.
>
> The next step was to understand how the patch for
> 'tools/firmware/hvmloader/acpi/dsdt.asl'
> works. Once I've understood, I've patched for my own graphic card.
>
> That's all.
>
> For my information, what kind of NVIDIA graphic card do you have? GT
> 430?GT 440, GTX?
>
> Supporting several cards?I do not know how to do.
>
> My feeling is that using the same kind of manufacturer graphic card
> would be possible
> because qemu-dm could only support one kind of VGA BIOS.
Guest needs VGA BIOS to initialize assigned graphics card in guest. 
qemu-dm only know how to copy video BIOS of primary graphics card which 
locates at 0xC0000, but don't know where are video BIOS of other 
graphics cards. if want to pass-through more than one graphics cards, 
must know how to get and load VGA BIOS to guest for other graphics 
cards. One method is to use tools such as NiBiTor to extract VGA BIOS 
from graphics card to a file, then load it to guest.
Weidong


> I know that in 2009 a patch was done to support more cards but I've
> tryid to updated it.
>
>
>
> ------------------------------------------------------------------------
> *De :* komkon555 <komkon555@xxxxxxxxxx>
> *À :* xen-devel@xxxxxxxxxxxxxxxxxxx
> *Envoyé le :* Mercredi 7 Septembre 2011 14h26
> *Objet :* Re: Re : Re : [Xen-devel] Re: Patches for VGA-Passthrough XEN
> 4.2 unstable
>
> Perfect, with the latest fixes and configurations it works! I can run dxdiag
> and see all tests functional. Important is, that cuda-programming is also
> functional (is what I exactly need). Thank you a lot! The next problem is
> how to pass through the second (third, fourth) nvidia card to the next one
> Windows-VM? For me is most impotent to get 4 separate CUDA/OpenCL
> programming areas. Have you any ideas?
>
> Tanks
> Komkon555
>
>
> --
> View this message in context:
> http://xen.1045712.n5.nabble.com/Patches-for-VGA-Passthrough-XEN-4-2-unstable-tp4406265p4778339.html
> Sent from the Xen - Dev mailing list archive at Nabble.com.
>
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